EP3289198B1 - Turbocharger with compressor - Google Patents

Turbocharger with compressor Download PDF

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Publication number
EP3289198B1
EP3289198B1 EP16721385.9A EP16721385A EP3289198B1 EP 3289198 B1 EP3289198 B1 EP 3289198B1 EP 16721385 A EP16721385 A EP 16721385A EP 3289198 B1 EP3289198 B1 EP 3289198B1
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EP
European Patent Office
Prior art keywords
injection device
flow channel
air
compressor
spiral housing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP16721385.9A
Other languages
German (de)
French (fr)
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EP3289198A1 (en
Inventor
Daniel Rusch
Gerd Mundinger
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ABB Schweiz AG
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ABB Schweiz AG
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Publication of EP3289198A1 publication Critical patent/EP3289198A1/en
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/44—Fluid-guiding means, e.g. diffusers
    • F04D29/441—Fluid-guiding means, e.g. diffusers especially adapted for elastic fluid pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B37/00—Engines characterised by provision of pumps driven at least for part of the time by exhaust
    • F02B37/04—Engines with exhaust drive and other drive of pumps, e.g. with exhaust-driven pump and mechanically-driven second pump
    • F02B37/10—Engines with exhaust drive and other drive of pumps, e.g. with exhaust-driven pump and mechanically-driven second pump at least one pump being alternatively or simultaneously driven by exhaust and other drive, e.g. by pressurised fluid from a reservoir or an engine-driven pump
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D17/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
    • F04D17/08—Centrifugal pumps
    • F04D17/10—Centrifugal pumps for compressing or evacuating
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
    • F04D27/02—Surge control
    • F04D27/0207—Surge control by bleeding, bypassing or recycling fluids
    • F04D27/0238—Details or means for fluid reinjection
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/4206—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
    • F02C6/00—Plural gas-turbine plants; Combinations of gas-turbine plants with other apparatus; Adaptations of gas-turbine plants for special use
    • F02C6/04—Gas-turbine plants providing heated or pressurised working fluid for other apparatus, e.g. without mechanical power output
    • F02C6/10—Gas-turbine plants providing heated or pressurised working fluid for other apparatus, e.g. without mechanical power output supplying working fluid to a user, e.g. a chemical process, which returns working fluid to a turbine of the plant
    • F02C6/12—Turbochargers, i.e. plants for augmenting mechanical power output of internal-combustion piston engines by increase of charge pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2220/00—Application
    • F05B2220/40—Application in turbochargers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2220/00—Application
    • F05D2220/40—Application in turbochargers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2250/00—Geometry
    • F05D2250/50—Inlet or outlet
    • F05D2250/52—Outlet
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies

Definitions

  • the present invention relates to a turbocharger for an internal combustion engine comprising a compressor arrangement.
  • the scope of the present invention extends to compressors with a purely radial or diagonal outflow of the compressor impeller.
  • air injection systems are used in and after the turbocharger compressor.
  • Such a known air injection system consists of so-called auxiliary air drives.
  • compressed air is blown in the impeller area of the compressor and in the direction of rotation. This drives the compressor impeller blades and increases the turbocharger speed as well as the mass flow and the boost pressure ratio.
  • DAI system Direct Air Injection System
  • Compressed air is injected coaxially into the pipe via a so-called lance after the compressor outlet flange.
  • the system works like a jet pump, which means that it reduces the compressor outlet pressure so that the turbocharger quickly reaches a higher speed.
  • DAI systems known from the prior art with an air injection device are generally designed in such a way that a nozzle protrudes into the flow channel of the diffuser in or after the turbocharger compressor.
  • Other known DAI systems provide for the use of so-called annular chamber arrangements in the flow channel.
  • this has the following disadvantages: On the one hand, the nozzle protruding into the flow channel can lead to flow losses during operation. Due to the flow in the flow channel, the risk of a nozzle break also increases if the nozzle protrudes into the flow channel.
  • an annular chamber arrangement in the flow channel an additional component is required, which causes additional costs.
  • a device of the generic type is also provided DE 1922386 A1 known.
  • the present invention is based on the objective technical problem of developing a compressor arrangement of a turbocharger for an internal combustion engine with an injection system in such a way that an optimized Injection of fluid into the flow channel of the compressor arrangement is ensured and at the same time flow losses in the flow channel of the compressor arrangement are reduced, as a result of which the load switching behavior of turbocharged internal combustion engines is improved.
  • the object is achieved by a turbocharger according to claim 1.
  • the turbocharger comprises a compressor arrangement which comprises a spiral housing with a flow channel and a cone diffuser which is designed to convey a first fluid that can be sucked in from outside the compressor arrangement.
  • the compressor arrangement further comprises a compressor outlet flange which is fluidically connected to the spiral housing via the flow channel, an injection device, the injection device being designed to introduce air from outside the compressor arrangement into the flow channel, the injection device being arranged outside the flow channel of the spiral housing.
  • the injection device is designed to inject the air into the cone diffuser.
  • the air injected by the injection device in the cone diffuser has a positive effect on the main flow in the flow channel, i.e. the injected air interacts with the first fluid of the main flow in the flow channel and supports or strengthens it Swirl or spiral flow of the main flow. This advantageously leads to a pressure reduction in the cone diffuser of the compressor arrangement.
  • Another advantage is that a nozzle for injecting fluid into the flow channel of the compressor arrangement can be implemented without additional components.
  • the injection device according to the invention which can be implemented with lower additional costs, does not impair the flow in the flow channel, which leads to a higher efficiency when the compressor arrangement is operated.
  • the injection device is at least partially incorporated in the spiral housing.
  • the injection device comprises at least one opening to the flow channel so that air can be introduced from outside the compressor arrangement through the injection device into the flow channel.
  • the injection device comprises a fluid channel.
  • the injection device is attached to an outer wall of the spiral housing so that air can be introduced into the flow channel from outside the compressor arrangement via the injection device through an opening in the spiral housing.
  • the outer wall of the spiral housing to which the injection device is attached is part of an outer wall of the conical diffuser.
  • the compressor outlet flange at least partially comprises an injection device so that air can be introduced from outside the compressor arrangement through the injection device into the flow channel of the spiral housing.
  • the injection device comprises a fluid channel in the compressor outlet flange, the fluid channel comprising a first opening and a second opening, wherein air from outside the compressor arrangement can be introduced into the fluid channel via the first opening of the fluid channel, and the second opening of the fluid channel fluidically connects the fluid channel to the flow channel of the spiral housing so that the introduced air can be introduced into the flow channel.
  • a section of the fluid channel is formed by a connection piece which can be connected to the compressor outlet flange.
  • the injection device comprises a reservoir for storing the air and for distributing the air uniformly over the circumference of the flow channel, the reservoir comprising part of the fluid channel.
  • the injection device comprises a connection element so that air can be introduced into the injection device from outside the compressor arrangement via an injection element which can be inserted into the connection element and a nozzle designed as a nozzle.
  • the injection device is designed in the shape of a nozzle.
  • the cone diffuser is fluidically connected to the rest of the spiral housing via the flow channel.
  • the cone diffuser is fluidically connected to the compressor outlet flange via the flow channel.
  • Fig. 4 shows an exhaust gas turbocharger with an axial turbine and a radial compressor.
  • the housing parts that can be seen from left to right in the external view are as follows:
  • the filter silencer 9 is located on the air inlet side of the compressor.
  • the air sucked in via the filter silencer is fed through a central opening in the filter silencer into the adjacent compressor housing with the spiral housing 2.
  • the compressor outlet flange 3 is indicated, which is provided for fastening a pipe with which the compressed air is fed to an internal combustion engine.
  • the compressor is driven via a shaft of the exhaust gas turbocharger that is rotatably mounted in the bearing housing 10.
  • the shaft is driven by a turbine wheel, which is arranged in the turbine housing.
  • the turbine housing comprises a gas outlet housing 30 and a gas inlet housing 31, which in the embodiment shown has a double-flow design.
  • Fig. 1 shows a section perpendicular to the shaft axis of the exhaust gas turbocharger through the spiral housing of a compressor arrangement.
  • the compressor arrangement 1 comprises the spiral housing 2 with a flow channel 12, the flow channel 12 being designed to convey a first fluid that can be sucked in from outside the compressor arrangement 1, for example air.
  • the compressor arrangement 1 furthermore comprises a compressor outlet flange 3, which is fluidically connected to the spiral housing 2 via the flow channel 12.
  • the compressor arrangement 1 further comprises a cone diffuser 5.
  • the cone diffuser 5 is fluidically connected to the compressor outlet flange 3 via the flow channel 12. However, the conical diffuser 5 is also fluidically connected to the spiral housing 2 via the flow channel 12.
  • the injection device 4 is designed to introduce air from outside the compressor arrangement 1 into the flow channel 12.
  • the injection device 4 is in the Figure 1 arranged outside the flow channel 12 of the spiral housing 2.
  • the injection device 4 comprises a connection element 14 for the supply of air and a fluid channel 13 through which the air that can be introduced from outside the compressor arrangement 1 flows.
  • the fluid channel 13 is connected to the flow channel 12 via an opening 6 in the spiral housing. The air injected via the fluid channel 13 thus interacts with the first fluid in the flow channel 12 and can intensify the swirl flow of the first fluid in the flow channel 12.
  • the injection device 4 is in the Figure 1 partially incorporated into the volute casing 2.
  • the injection device 4 is shown in FIG Figure 1 attached to an outer wall 7 of the spiral housing 2, so that air from outside the Compressor arrangement 1 can flow into flow channel 12 via injection device 4 through opening 6 in spiral housing 2.
  • the Fig. 1 forms the outer wall 7 of the Spiral housing 2, to which the injection device 4 is attached, part of an outer wall 8 of the conical diffuser 5.
  • the compressor arrangement according to the embodiment of FIG Figure 1 is part of a turbocharger (not shown).
  • Fig. 2 shows a section of a compressor outlet flange 11 with an injection device integrated in the compressor outlet flange 11.
  • the injection device can also be only partially incorporated into the compressor outlet flange 11 (not shown) so that air can be introduced from outside the compressor arrangement 1 through the injection device into the flow channel 12 of the spiral housing 2.
  • the injection device comprises a fluid channel 23 in the compressor outlet flange 11, wherein the fluid channel 23 comprises a first opening 24 and a second opening 25, wherein air from outside the compressor arrangement 1 can be introduced into the fluid channel 23 via the first opening 24 of the fluid channel 23, and wherein the second opening 25 of the fluid channel 23 fluidly connects the fluid channel 23 to the flow channel 12 of the spiral housing 2 so that the introduced air can be introduced into the flow channel 12.
  • the injection device comprises a connection element 14.
  • An injection element designed as a nozzle can be inserted into the injection device 4 in the connection element 14 so that the second fluid can be introduced into the injection device 4 from outside the compressor arrangement 1.
  • the injection device can be designed in the shape of a nozzle.
  • Fig. 3 shows a section of a compressor outlet flange 16 with an injection device 20 of a compressor arrangement 1.
  • the injection device 20 comprises a fluid channel 23 in the compressor outlet flange 17, wherein the fluid channel 23 comprises a first opening 24 and a second opening 25, with air flowing through the first opening 24 of the fluid channel 23 can be introduced into the fluid channel 23 outside the compressor arrangement 1, and wherein the second opening 25 of the fluid channel 23 fluidly connects the fluid channel 23 to the flow channel 12 of the spiral housing 2 so that the introduced air can be introduced into the flow channel 12.
  • a section of the fluid channel 23 formed by a connection piece 18 which can be connected to the compressor outlet flange 16. This connection piece 18 can be designed on the engine side.
  • the injection device 20 comprises a connection element 14. Furthermore, the injection device 20 comprises a reservoir 19 for storing the air and for uniformly distributing the air over the circumference of the flow channel 12, the reservoir 19 comprising part of the fluid channel 23. Also in the embodiment of Figure 3 the injection device 20 can be configured in the shape of a nozzle.
  • the injection device 4, 20 can be arranged in such a way that the air that can be introduced into the flow channel 12 through the injection device 4, 20 optimally follows a swirl flow of the first fluid in the flow channel 12 of the compressor arrangement 1 in order to increase the swirl flow of the first fluid.
  • the fluid channel 13, 23 form the contour for the nozzle.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Supercharger (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Description

Die vorliegende Erfindung betrifft einen Turbolader für einen Verbrennungsmotor umfassend eine Verdichteranordnung. Der Anwendungsbereich der vorliegenden Erfindung erstreckt sich auf Verdichter mit einer rein radialen oder diagonalen Abströmung des Verdichterlaufrades.The present invention relates to a turbocharger for an internal combustion engine comprising a compressor arrangement. The scope of the present invention extends to compressors with a purely radial or diagonal outflow of the compressor impeller.

STAND DER TECHNIKSTATE OF THE ART

Um bei turboaufgeladenen Verbrennungsmotoren das Lastaufschaltverhalten zu verbessern, werden im und nach dem Turboladerverdichter Lufteinblasesysteme eingesetzt. Ein solches bekanntes Lufteinblasesystem besteht aus sogenannten Lufthilfsantrieben. Dabei ist dem Fachmann bekannt, dass komprimierte Luft im Laufradbereich des Verdichters und in Drehrichtung eingeblasen wird. Dadurch werden die Verdichterradschaufeln angetrieben und die Turboladerdrehzahl sowie der Massenstrom und das Ladedruckverhältnis nehmen zu. Ein anderes, dem Fachmann bekanntes, Lufteinblasesystem ist unter der Bezeichnung Direct Air Injection System (DAI-System) bekannt. Dabei wird Pressluft über eine sogenannte Lanze nach dem Vedichteraustrittsflansch koaxial ins Rohr eingedüst. Das System arbeit dabei wie eine Strahlpumpe, das heisst, es reduziert den Verdichteraustrittsdruck, so das der Turbolader schnelle eine höhere Drehzahl erreicht. Zugleich wird damit der Massenstrom durch den Motor erhöht, was eine schnellere Lastaufschaltung ermöglicht. Aus dem Stand der Technik bekannte DAI-Systeme mit einer Lufteinblasevorrichtung sind dabei in der Regel derart ausgebildet, dass im oder nach dem Turboladerverdichter eine Düse in den Strömungskanal des Diffusors hineinragt. Andere bekannte DAI-Systeme sehen die Verwendung von sogenannten Ringkammeranordnungen im Strömungskanal vor. Dies hat jedoch folgende Nachteile: Zum einen kann durch die in den Strömungskanal hineinragende Düse während des Betriebs zu Strömungsverlusten kommen. Auch steigt aufgrund der Strömung im Strömungskanal das Risiko eines Düsenbruchs, wenn die Düse in den Strömungskanal hineinragt. Bei der Verwendung einer Ringkammeranordnung im Strömungskanal wird ein zusätzliches Bauteil benötigt, was Zusatzkosten verursacht.In order to improve the load transfer behavior of turbocharged internal combustion engines, air injection systems are used in and after the turbocharger compressor. Such a known air injection system consists of so-called auxiliary air drives. The person skilled in the art knows that compressed air is blown in the impeller area of the compressor and in the direction of rotation. This drives the compressor impeller blades and increases the turbocharger speed as well as the mass flow and the boost pressure ratio. Another air injection system known to the person skilled in the art is known as the Direct Air Injection System (DAI system). Compressed air is injected coaxially into the pipe via a so-called lance after the compressor outlet flange. The system works like a jet pump, which means that it reduces the compressor outlet pressure so that the turbocharger quickly reaches a higher speed. At the same time, the mass flow through the motor is increased, which enables faster load switching. DAI systems known from the prior art with an air injection device are generally designed in such a way that a nozzle protrudes into the flow channel of the diffuser in or after the turbocharger compressor. Other known DAI systems provide for the use of so-called annular chamber arrangements in the flow channel. However, this has the following disadvantages: On the one hand, the nozzle protruding into the flow channel can lead to flow losses during operation. Due to the flow in the flow channel, the risk of a nozzle break also increases if the nozzle protrudes into the flow channel. When using an annular chamber arrangement in the flow channel, an additional component is required, which causes additional costs.

Weiter ist eine gattungsgemässe Vorrichtung aus DE 1922386 A1 bekannt.A device of the generic type is also provided DE 1922386 A1 known.

ZUSAMMENFASSUNG DER ERFINDUNGSUMMARY OF THE INVENTION

Der vorliegenden Erfindung liegt die objektive technische Aufgabe zugrunde, eine Verdichteranordnung eines Turboladers für einen Verbrennungsmotor mit einem Einblasesystem derart weiterzubilden, dass eine optimierte Eindüsung von Fluid in den Strömungskanal der Verdichteranordnung gewährleistet wird und zugleich Strömungsverluste im Strömungskanal der Verdichteranordnung reduziert werden, wodurch das Lastaufschaltverhalten von turboaufgeladenen Verbrennungsmotoren verbessert wird.The present invention is based on the objective technical problem of developing a compressor arrangement of a turbocharger for an internal combustion engine with an injection system in such a way that an optimized Injection of fluid into the flow channel of the compressor arrangement is ensured and at the same time flow losses in the flow channel of the compressor arrangement are reduced, as a result of which the load switching behavior of turbocharged internal combustion engines is improved.

Die Aufgabe wird durch einen Turbolader gemäß dem Anspruch 1 gelöst. Der Turbolader umfasst eine Verdichteranordnung, welche ein Spiralgehäuse mit einem Strömungskanal und einem Kegeldiffusor umfasst, welcher ausgebildet ist, ein von ausserhalb der Verdichteranordnung ansaugbares erstes Fluid zu befördern. Die Verdichteranordnung umfasst weiterhin einen Verdichteraustrittsflansch, welcher über den Strömungskanal mit dem Spiralgehäuse fluidisch verbunden ist, eine Einblasevorrichtung, wobei die Einblasevorrichtung ausgebildet ist, Luft von ausserhalb der Verdichteranordnung in den Strömungskanal einzuleiten, wobei die Einblasevorrichtung ausserhalb des Strömungskanals des Spiralgehäuses angeordnet ist. Die Einblasevorrichtung ist so ausgebildet, die Luft im Kegeldiffusor einzudüsen.The object is achieved by a turbocharger according to claim 1. The turbocharger comprises a compressor arrangement which comprises a spiral housing with a flow channel and a cone diffuser which is designed to convey a first fluid that can be sucked in from outside the compressor arrangement. The compressor arrangement further comprises a compressor outlet flange which is fluidically connected to the spiral housing via the flow channel, an injection device, the injection device being designed to introduce air from outside the compressor arrangement into the flow channel, the injection device being arranged outside the flow channel of the spiral housing. The injection device is designed to inject the air into the cone diffuser.

Durch die Anordnung der Einblasevorrichtung ausserhalb des Strömungskanals des Spiralgehäuses ergeben sich folgende Vorteile: die von der Einblasevorrichtung im Kegeldiffusor eingedüste Luft beeinflusst die Hauptströmung im Strömungskanal positiv, das heisst, die eingedüste Luft interagiert mit dem ersten Fluid der Hauptströmung im Strömungskanal und unterstützt beziehungsweise verstärkt eine Drall- oder Spiralströmung der Hauptströmung. Dies führt in vorteilhafterweise Weise zu einer Druckreduktion im Kegeldiffusor der Verdichteranordnung.The arrangement of the injection device outside the flow channel of the spiral housing results in the following advantages: the air injected by the injection device in the cone diffuser has a positive effect on the main flow in the flow channel, i.e. the injected air interacts with the first fluid of the main flow in the flow channel and supports or strengthens it Swirl or spiral flow of the main flow. This advantageously leads to a pressure reduction in the cone diffuser of the compressor arrangement.

Ein weiterer Vorteil besteht darin, dass eine Düse zur Eindüsung von Fluid in den Strömungskanal der Verdichteranordnung ohne zusätzliche Bauteile realisiert werden kann. Ausserdem wird durch die erfindungsgemässe Einblasevorrichtung, welche mit geringeren Zusatzkosten realisierbar ist, die Strömung im Strömungskanal nicht beeinträchtigt, was zu einer höheren Effizienz bei Betreiben der Verdichteranordnung führt.Another advantage is that a nozzle for injecting fluid into the flow channel of the compressor arrangement can be implemented without additional components. In addition, the injection device according to the invention, which can be implemented with lower additional costs, does not impair the flow in the flow channel, which leads to a higher efficiency when the compressor arrangement is operated.

AUSFÜHRUNGSFORMEN DER ERFINDUNGEMBODIMENTS OF THE INVENTION

Bei einer Ausführungsform der vorliegenden Erfindung ist die Einblasevorrichtung zumindest teilweise im Spiralgehäuse eingearbeitet. Die Einblasevorrichtung umfasst mindestens eine Öffnung zum Strömungskanal, damit Luft von ausserhalb der Verdichteranordnung durch die Einblasevorrichtung in den Strömungskanal einleitbar ist.In one embodiment of the present invention, the injection device is at least partially incorporated in the spiral housing. The injection device comprises at least one opening to the flow channel so that air can be introduced from outside the compressor arrangement through the injection device into the flow channel.

Bei einer bevorzugten Ausführungsform der vorliegenden Erfindung umfasst die Einblasevorrichtung einen Fluidkanal.In a preferred embodiment of the present invention, the injection device comprises a fluid channel.

Bei einer bevorzugten Ausführungsform der vorliegenden Erfindung ist die Einblasevorrichtung an einer Aussenwand des Spiralgehäuses angebracht, damit Luft von ausserhalb der Verdichteranordnung über die Einblasevorrichtung durch eine Öffnung im Spiralgehäuse in den Strömungskanal einleitbar ist.In a preferred embodiment of the present invention, the injection device is attached to an outer wall of the spiral housing so that air can be introduced into the flow channel from outside the compressor arrangement via the injection device through an opening in the spiral housing.

Bei einer bevorzugten Ausführungsform der vorliegenden Erfindung ist die Aussenwand des Spiralgehäuses, an welcher die Einblasevorrichtung angebracht ist, ein Teil einer Aussenwand des Kegeliffusors.In a preferred embodiment of the present invention, the outer wall of the spiral housing to which the injection device is attached is part of an outer wall of the conical diffuser.

Bei einer bevorzugten Ausführungsform der vorliegenden Erfindung umfasst der Verdichteraustrittsflansch zumindest teilweise eine Einblasevorrichtung, damit Luft von ausserhalb der Verdichteranordnung durch die Einblasevorrichtung in den Strömungskanal des Spiralgehäuses einleitbar ist.In a preferred embodiment of the present invention, the compressor outlet flange at least partially comprises an injection device so that air can be introduced from outside the compressor arrangement through the injection device into the flow channel of the spiral housing.

Bei einer bevorzugten Ausführungsform der vorliegenden Erfindung umfasst die Einblasevorrichtung einen Fluidkanal im Verdichteraustrittsflansch, wobei der Fluidkanal eine erste Öffnung und eine zweite Öffnung umfasst, wobei über die erste Öffnung des Fluidkanals Luft von ausserhalb der Verdichteranordnung in den Fluidkanal einleitbar ist, und wobei die zweite Öffnung des Fluidkanals den Fluidkanal mit dem Strömungskanal des Spiralgehäuses fluidisch verbindet, damit die eingeleitete Luft in den Strömungskanal einleitbar ist.In a preferred embodiment of the present invention, the injection device comprises a fluid channel in the compressor outlet flange, the fluid channel comprising a first opening and a second opening, wherein air from outside the compressor arrangement can be introduced into the fluid channel via the first opening of the fluid channel, and the second opening of the fluid channel fluidically connects the fluid channel to the flow channel of the spiral housing so that the introduced air can be introduced into the flow channel.

Bei einer bevorzugten Ausführungsform der vorliegenden Erfindung wird ein Abschnitt des Fluidkanals gebildet von einem Anschlussstück, welches mit dem Verdichteraustrittsflansch verbindbar ist.In a preferred embodiment of the present invention, a section of the fluid channel is formed by a connection piece which can be connected to the compressor outlet flange.

Bei einer bevorzugten Ausführungsform der vorliegenden Erfindung umfasst die Einblasevorrichtung ein Reservoir zur Speicherung der Luft und zur gleichförmigen Verteilung der Luft über dem Umfang des Strömungskanals, wobei das Reservoir ein Teil des Fluidkanals umfasst.In a preferred embodiment of the present invention, the injection device comprises a reservoir for storing the air and for distributing the air uniformly over the circumference of the flow channel, the reservoir comprising part of the fluid channel.

Bei einer bevorzugten Ausführungsform der vorliegenden Erfindung umfasst die Einblasevorrichtung ein Anschlusselement, damit Luft von ausserhalb der Verdichteranordnung über eine in das Anschlusselement einsetzbares und eine als Düse ausgebildetes Einblaselement in die Einblasevorrichtung einleitbar ist.In a preferred embodiment of the present invention, the injection device comprises a connection element so that air can be introduced into the injection device from outside the compressor arrangement via an injection element which can be inserted into the connection element and a nozzle designed as a nozzle.

Bei einer bevorzugten Ausführungsform der vorliegenden Erfindung ist die Einblasevorrichtung düsenförmig ausgebildet.In a preferred embodiment of the present invention, the injection device is designed in the shape of a nozzle.

Gemäß der vorliegenden Erfindung ist der Kegeldiffusor mit dem übrigen Spiralgehäuse fluidisch über den Strömungskanal verbunden.According to the present invention, the cone diffuser is fluidically connected to the rest of the spiral housing via the flow channel.

Bei einer bevorzugten Ausführungsform der vorliegenden Erfindung ist der Kegeldiffusor über den Strömungskanal mit dem Verdichteraustrittsflansch fluidisch verbunden.In a preferred embodiment of the present invention, the cone diffuser is fluidically connected to the compressor outlet flange via the flow channel.

KURZE BESCHREIBUNG DER ZEICHNUNGENBRIEF DESCRIPTION OF THE DRAWINGS

Nachfolgend wird die Erfindung anhand von Ausführungsbeispielen beschrieben, die anhand von Zeichnungen näher erläutert werden. Hierbei zeigen:

  • Fig. 1 zeigt eine Verdichteranordnung mit Einblasevorrichtung in Schnittansicht gemäss einer ersten Ausführungsform der vorliegenden Erfindung;
  • Fig. 2 zeigt einen Ausschnitt eines Verdichteraustrittsflanschs mit integrierter Einblasevorrichtung gemäss einer zweiten Ausführungsform der vorliegenden Erfindung;
  • Fig. 3 zeigt einen Ausschnitt eines Verdichteraustrittsflansches mit Einblasevorrichtung gemäss einer dritten Ausführungsform der vorliegenden Erfindung.
  • Fig. 4 zeigt eine Aussenansicht eines Abgasturboladers mit einem Filterschalldämpfer, einem Verdichteraustrittsgehäuse (Spiralgehäuse), einem Lagergehäuse, einem Gasaustrittsgehäuse und einem Gaseintrittsgehäuse.
The invention is described below on the basis of exemplary embodiments, which are explained in more detail with reference to drawings. Here show:
  • Fig. 1 shows a compressor arrangement with an injection device in a sectional view according to a first embodiment of the present invention;
  • Fig. 2 shows a section of a compressor outlet flange with an integrated injection device according to a second embodiment of the present invention;
  • Fig. 3 shows a section of a compressor outlet flange with injection device according to a third embodiment of the present invention.
  • Fig. 4 shows an external view of an exhaust gas turbocharger with a filter silencer, a compressor outlet housing (spiral housing), a bearing housing, a gas outlet housing and a gas inlet housing.

In der nachfolgenden Beschreibung werden für gleiche und gleich wirkende Teile identische Bezugszeichen verwendet.In the following description, identical reference symbols are used for identical and identically acting parts.

AUSFÜHRLICHE BESCHREIBUNG DER ZEICHNUNGENDETAILED DESCRIPTION OF THE DRAWINGS

Fig. 4 zeigt einen Abgasturbolader mit einer Axialturbine und einem Radialverdichter. Die in der Aussenansicht zu sehenden Gehäuseteile von links nach rechts sind die folgenden: Der Filterschalldämpfer 9 befindet sich auf der Lufteintrittsseite des Verdichters. Die über den Filterschalldämpfer angesaugte Luft wird durch eine zentrale Öffnung im Filterschalldämpfer ins angrenzende Verdichtergehäuse, mit dem Spiralgehäuse 2 geführt. Am oberen Rand des Spiralgehäuses ist der Verdichteraustrittsflansch 3 angedeutet, welcher zur Befestigungs eines Rohres vorgesehen ist, mit welchem die verdichtete Luft einer Brennkraftmaschine zugeführt wird. Der Verdichter wird angetrieben über eine im Lagergehäuse 10 drehbar gelagerte Welle des Abgasturboladers. Angetrieben wird die Welle durch ein Turbinenrad, welches im Turbinengehäuse angeordnet ist. Das Turbinengehäuse umfasst eine Gasaustrittsgehäuse 30 sowie ein Gaseintrittsgehäuse 31, welches in der dargestellten Ausführung zweiflutig ausgebildet ist. Fig. 4 shows an exhaust gas turbocharger with an axial turbine and a radial compressor. The housing parts that can be seen from left to right in the external view are as follows: The filter silencer 9 is located on the air inlet side of the compressor. The air sucked in via the filter silencer is fed through a central opening in the filter silencer into the adjacent compressor housing with the spiral housing 2. At the upper edge of the spiral housing, the compressor outlet flange 3 is indicated, which is provided for fastening a pipe with which the compressed air is fed to an internal combustion engine. The compressor is driven via a shaft of the exhaust gas turbocharger that is rotatably mounted in the bearing housing 10. The shaft is driven by a turbine wheel, which is arranged in the turbine housing. The turbine housing comprises a gas outlet housing 30 and a gas inlet housing 31, which in the embodiment shown has a double-flow design.

Fig. 1 zeigt in einem Schnitt senkrecht zur Wellenachse des Abgasturboladers durch das Spiralgehäuse einer Verdichteranordnung. Die Verdichteranordnung 1 umfasst das Spiralgehäuse 2 mit einem Strömungskanal 12, wobei der Strömungskanal 12 ausgebildet ist, ein von ausserhalb der Verdichteranordnung 1 ansaugbares erstes Fluid wie zum Beispiel Luft zu befördern. Die Verdichteranordnung 1 umfasst weiterhin einen Verdichteraustrittsflansch 3, welcher über den Strömungskanal 12 mit dem Spiralgehäuse 2 fluidisch verbunden ist. Die Verdichteranordnung 1 umfasst des Weiteren einen Kegeldiffusor 5. Fig. 1 shows a section perpendicular to the shaft axis of the exhaust gas turbocharger through the spiral housing of a compressor arrangement. The compressor arrangement 1 comprises the spiral housing 2 with a flow channel 12, the flow channel 12 being designed to convey a first fluid that can be sucked in from outside the compressor arrangement 1, for example air. The compressor arrangement 1 furthermore comprises a compressor outlet flange 3, which is fluidically connected to the spiral housing 2 via the flow channel 12. The compressor arrangement 1 further comprises a cone diffuser 5.

Der Kegeldiffusor 5 ist über den Strömungskanal 12 mit dem Verdichteraustrittsflansch 3 fluidisch verbunden. Der Kegeldiffusor 5 ist jedoch auch über den Strömungskanal 12 fluidisch mit dem Spiralgehäuse 2 verbunden. Die Einblasevorrichtung 4 ist ausgebildet, Luft von ausserhalb der Verdichteranordnung 1 in den Strömungskanal 12 einzuleiten. Die Einblasevorrichtung 4 ist in der Figur 1 ausserhalb des Strömungskanals 12 des Spiralgehäuses 2 angeordnet. Die Einblasevorrichtung 4 umfasst ein Anschlusselement 14 für die Zuleitung der Luft und einen Fluidkanal 13, durch den die von ausserhalb der Verdichteranordnung 1 einleitbare Luft strömt. Der Fluidkanal 13 ist über eine Öffnung 6 im Spiralgehäuse mit dem Strömungskanal 12 verbunden. Die über den Fluidkanal 13 eingedüste Luft interagiert also mit dem ersten Fluid im Strömungskanal 12 und kann die Drallströmung des ersten Fluids im Strömungskanal 12 verstärken. Die Einblasevorrichtung 4 ist in der Figur 1 teilweise in das Spiralgehäuse 2 eingearbeitet. Im Detail ist die Einblasevorrichtung 4 in der Figur 1 an einer Aussenwand 7 des Spiralgehäuses 2 angebracht, damit Luft von ausserhalb der Verdichteranordnung 1 über die Einblasevorrichtung 4 durch die Öffnung 6 im Spiralgehäuse 2 in den Strömungskanal 12 strömen kann. In der Fig. 1 bildet die Aussenwand 7 des Spiralgehäuses 2, an welcher die Einblasevorrichtung 4 angebracht ist, einen Teil einer Aussenwand 8 des Kegeldiffusors 5. Die Verdichteranordung gemäss der Ausführungsform der Figur 1 ist dabei Bestandteil eines Turboladers (nicht dargestellt).The cone diffuser 5 is fluidically connected to the compressor outlet flange 3 via the flow channel 12. However, the conical diffuser 5 is also fluidically connected to the spiral housing 2 via the flow channel 12. The injection device 4 is designed to introduce air from outside the compressor arrangement 1 into the flow channel 12. The injection device 4 is in the Figure 1 arranged outside the flow channel 12 of the spiral housing 2. The injection device 4 comprises a connection element 14 for the supply of air and a fluid channel 13 through which the air that can be introduced from outside the compressor arrangement 1 flows. The fluid channel 13 is connected to the flow channel 12 via an opening 6 in the spiral housing. The air injected via the fluid channel 13 thus interacts with the first fluid in the flow channel 12 and can intensify the swirl flow of the first fluid in the flow channel 12. The injection device 4 is in the Figure 1 partially incorporated into the volute casing 2. In detail, the injection device 4 is shown in FIG Figure 1 attached to an outer wall 7 of the spiral housing 2, so that air from outside the Compressor arrangement 1 can flow into flow channel 12 via injection device 4 through opening 6 in spiral housing 2. In the Fig. 1 forms the outer wall 7 of the Spiral housing 2, to which the injection device 4 is attached, part of an outer wall 8 of the conical diffuser 5. The compressor arrangement according to the embodiment of FIG Figure 1 is part of a turbocharger (not shown).

Fig. 2 zeigt einen Ausschnitt eines Verdichteraustrittsflansches 11 mit einer in den Verdichteraustrittsflansch 11 integrierten Einblasevorrichtung. Alternativ kann die Einblasevorrichtung auch nur teilweise in den Verdichteraustrittsflansch 11 eingearbeitet sein (nicht dargestellt), damit Luft von ausserhalb der Verdichteranordnung 1 durch die Einblasevorrichtung in den Strömungskanal 12 des Spiralgehäuses 2 einleitbar ist. Die Einblasevorrichtung umfasst einen Fluidkanal 23 im Verdichteraustrittsflansch 11, wobei der Fluidkanal 23 eine erste Öffnung 24 und eine zweite Öffnung 25 umfasst, wobei über die erste Öffnung 24 des Fluidkanals 23 Luft von ausserhalb der Verdichteranordnung 1 in den Fluidkanal 23 einleitbar ist, und wobei die zweite Öffnung 25 des Fluidkanals 23 den Fluidkanal 23 mit dem Strömungskanal 12 des Spiralgehäuses 2 fluidisch verbindet, damit die eingeleitete Luft in den Strömungskanal 12 einleitbar ist. In der Figur 2 umfasst die Einblasevorrichtung ein Anschlusselement 14. In das Anschlusselement 14 kann ein als Düse ausgebildetes Einblaselement in die Einblasevorrichtung 4 eingesetzt werden, damit das zweite Fluid von ausserhalb der Verdichteranordnung 1 in die Einblasevorrichtung 4 einleitbar ist. Die Einblasevorrichtung kann dabei düsenförmig ausgebildet sein. Fig. 2 shows a section of a compressor outlet flange 11 with an injection device integrated in the compressor outlet flange 11. Alternatively, the injection device can also be only partially incorporated into the compressor outlet flange 11 (not shown) so that air can be introduced from outside the compressor arrangement 1 through the injection device into the flow channel 12 of the spiral housing 2. The injection device comprises a fluid channel 23 in the compressor outlet flange 11, wherein the fluid channel 23 comprises a first opening 24 and a second opening 25, wherein air from outside the compressor arrangement 1 can be introduced into the fluid channel 23 via the first opening 24 of the fluid channel 23, and wherein the second opening 25 of the fluid channel 23 fluidly connects the fluid channel 23 to the flow channel 12 of the spiral housing 2 so that the introduced air can be introduced into the flow channel 12. In the Figure 2 the injection device comprises a connection element 14. An injection element designed as a nozzle can be inserted into the injection device 4 in the connection element 14 so that the second fluid can be introduced into the injection device 4 from outside the compressor arrangement 1. The injection device can be designed in the shape of a nozzle.

Fig. 3 zeigt einen Ausschnitt eines Verdichteraustrittsflansches 16 mit Einblasevorrichtung 20 einer Verdichteranordnung 1. Die Einblasevorrichtung 20 umfasst einen Fluidkanal 23 im Verdichteraustrittsflansch 17, wobei der Fluidkanal 23 eine erste Öffnung 24 und eine zweite Öffnung 25 umfasst, wobei über die erste Öffnung 24 des Fluidkanals 23 Luft von ausserhalb der Verdichteranordnung 1 in den Fluidkanal 23 einleitbar ist, und wobei die zweite Öffnung 25 des Fluidkanals 23 den Fluidkanal 23 mit dem Strömungskanal 12 des Spiralgehäuses 2 fluidisch verbindet, damit die eingeleitete Luft in den Strömungskanal 12 einleitbar ist. Im Gegensatz zur Figur 2 wird in der Ausführungsform der Figur 3 ein Abschnitt des Fluidkanals 23 gebildet von einem Anschlussstück 18, welches mit dem Verdichteraustrittsflansch 16 verbindbar ist. Dieses Anschlussstück 18 kann dabei motorseitig ausgelegt sein. Auch in der Figur 3 umfasst die Einblasevorrichtung 20 ein Anschlusselement 14. Weiterhin umfasst die Einblasevorrichtung 20 ein Reservoir 19 zur Speicherung der Luft und zur gleichförmigen Verteilung der Luft über dem Umfang des Strömungskanals 12, wobei das Reservoir 19 ein Teil des Fluidkanals 23 umfasst. Auch in der Ausführungsform der Figur 3 kann die Einblasevorrichtung 20 düsenförmig ausgebildet sein. Fig. 3 shows a section of a compressor outlet flange 16 with an injection device 20 of a compressor arrangement 1. The injection device 20 comprises a fluid channel 23 in the compressor outlet flange 17, wherein the fluid channel 23 comprises a first opening 24 and a second opening 25, with air flowing through the first opening 24 of the fluid channel 23 can be introduced into the fluid channel 23 outside the compressor arrangement 1, and wherein the second opening 25 of the fluid channel 23 fluidly connects the fluid channel 23 to the flow channel 12 of the spiral housing 2 so that the introduced air can be introduced into the flow channel 12. In contrast to Figure 2 is in the embodiment of Figure 3 a section of the fluid channel 23 formed by a connection piece 18 which can be connected to the compressor outlet flange 16. This connection piece 18 can be designed on the engine side. Also in the Figure 3 the injection device 20 comprises a connection element 14. Furthermore, the injection device 20 comprises a reservoir 19 for storing the air and for uniformly distributing the air over the circumference of the flow channel 12, the reservoir 19 comprising part of the fluid channel 23. Also in the embodiment of Figure 3 the injection device 20 can be configured in the shape of a nozzle.

In den Ausführungsformen der Figuren 1 bis 3 kann die Einblasevorrichtung 4, 20 jeweils derart angeordnet sein, damit die durch die Einblasevorrichtung 4, 20 in den Strömungskanal 12 einleitbare Luft optimalerweise einer Drallströmung des ersten Fluids im Strömungskanal 12 der Verdichteranordnung 1 folgt, um die Drallströmung des ersten Fluids zu verstärken.In the embodiments of Figures 1 to 3 The injection device 4, 20 can be arranged in such a way that the air that can be introduced into the flow channel 12 through the injection device 4, 20 optimally follows a swirl flow of the first fluid in the flow channel 12 of the compressor arrangement 1 in order to increase the swirl flow of the first fluid.

Zudem kann in den Ausführungsformen der Figuren 1 bis 3 der Fluidkanal 13, 23 die Kontur für die Düse bilden.In addition, in the embodiments of Figures 1 to 3 the fluid channel 13, 23 form the contour for the nozzle.

BezugszeichenlisteList of reference symbols

  • 1 Verdichteranordnung mit Kegeldiffusor1 compressor arrangement with cone diffuser
  • 2 Spiralgehäuse der Verdichteranordnung (Verdichteraustrittsgehäuse)2 Spiral casing of the compressor arrangement (compressor outlet casing)
  • 3 Verdichteraustrittsflansch3 compressor outlet flange
  • 4 Einblasevorrichtung4 blowing device
  • 5 Kegeldiffusor5 cone diffuser
  • 6 Öffnung im Spiralgehäuse6 Opening in the volute casing
  • 7 Aussenwand des Spiralgehäuses7 Outer wall of the volute casing
  • 8 Aussenwand des Kegeldiffusors8 Outer wall of the cone diffuser
  • 9 Filterschalldämpfer am Eingang des Verdichters9 Filter silencer at the inlet of the compressor
  • 10 Lagergehäuse zur Lagerung der Welle des Abgasturboladers10 Bearing housing for supporting the shaft of the exhaust gas turbocharger
  • 11 Verdichteraustrittsflansch11 Compressor outlet flange
  • 12 Strömungskanal12 flow channel
  • 13 Fluidkanal der Einblasevorrichtung13 Fluid channel of the injection device
  • 14 Anschlusselement für Fluidzuleitung14 Connection element for fluid supply line
  • 16 Verdichteraustrittsflansch mit Anschlussstück16 Compressor outlet flange with connection piece
  • 17 Verdichteraustrittsflansch17 Compressor outlet flange
  • 18 Anschlussstück18 connector
  • 19 Reservoir19 reservoir
  • 20 Einblasevorrichtung20 Injection device
  • 23 Fluidkanal der Einblasevorrichtung23 Fluid channel of the injection device
  • 24 erste Öffnung der Einblasevorrichtung24 first opening of the injection device
  • 25 zweite Öffnung der Einblasevorrichtung25 second opening of the injection device
  • 30 Gasaustrittsgehäuse der Turbine des Abgasturboladers30 Gas outlet housing of the turbine of the exhaust gas turbocharger
  • 31 Gaseintrittsgehäuse der Turbine des Abgasturboladers31 Gas inlet casing of the turbine of the exhaust gas turbocharger

Claims (11)

  1. Turbocharger for an internal combustion engine, comprising a compressor assembly (1), the compressor assembly (1) comprises:
    a spiral housing (2) with
    a flow channel (12) which is designed to convey a first fluid which can be sucked up from outside the compressor assembly (1) and to feed said fluid to a compressor outlet; and
    a conical diffuser,
    a compressor outlet flange (3, 11, 16) which is arranged on the spiral housing and is adjacent to the conical diffuser,
    an injection device (4, 20) for improving the load response behavior of an internal combustion engine which can be connected to the turbocharger, wherein
    the injection device (4, 20) is designed to introduce air from outside the compressor assembly (1) into the flow channel (12), wherein
    the injection device (4, 20) is arranged outside the flow channel (12) of the spiral housing (2), characterized in that
    the injection device (4, 20) is designed so as to inject the air in the conical diffuser (5).
  2. Turbocharger according to Claim 1, characterized in that the injection device (4, 20) is at least partially incorporated in the spiral housing (2), and in that the injection device (4) comprises at least one opening (6) to the flow channel (12) so that air can be introduced from outside the compressor assembly (1) into the flow channel (12) by the injection device (4).
  3. Turbocharger according to Claim 1, characterized in that the injection device (4) comprises a fluid channel (13) .
  4. Turbocharger according to Claim 1, characterized in that the injection device (4, 20) is attached to an outer wall (7) of the spiral housing (2) so that air can be introduced from outside the compressor assembly (1) via the injection device (4) into the flow channel (12) through an opening (6) in the spiral housing (2).
  5. Turbocharger according to Claim 4, characterized in that the outer wall (7) of the spiral housing (2), to which outer wall the injection device (4) is attached, forms part of an outer wall (8) of the conical diffuser (5) .
  6. Turbocharger according to Claim 1, characterized in that the compressor outlet flange (11) at least partially comprises the injection device (4, 20) so that air can be introduced from outside the compressor assembly (1) by the injection device into the flow channel (12) of the spiral housing (2).
  7. Turbocharger according to Claim 6, characterized in that the injection device (20) comprises a fluid channel (23) in the compressor outlet flange (11), wherein the fluid channel (23) comprises a first opening (24) and a second opening (25), wherein air can be introduced from outside the compressor assembly (1) into the fluid channel (23) via the first opening (24) of the fluid channel (23), and wherein the second opening (25) of the fluid channel (23) fluidically connects the fluid channel (23) to the flow channel (12) of the spiral housing (2) so that the air can be introduced into the flow channel (12) .
  8. Turbocharger according to Claim 7, characterized in that a portion of the fluid channel (23) is formed by a connection piece (18) which is connectable to the compressor outlet flange (16).
  9. Turbocharger according to one of the preceding claims, characterized in that the injection device (4, 20) has a reservoir (19) for storing the air and for the uniform distribution of the air over the circumference of the flow channel (12), wherein the reservoir (19) comprises part of the fluid channel (13, 23).
  10. Turbocharger according to one of the preceding claims, characterized in that the injection device (4, 20) comprises a connection element (14) so that air can be introduced from outside the compressor assembly (1) into the injection device (4) via an injection element which is insertable into the connection element (14) and is designed as a nozzle.
  11. Turbocharger according to one of the preceding claims, characterized in that the injection device (4, 20) is of nozzle-shaped design.
EP16721385.9A 2015-04-29 2016-04-27 Turbocharger with compressor Active EP3289198B1 (en)

Applications Claiming Priority (2)

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DE102015106596 2015-04-29
PCT/EP2016/059390 WO2016174078A1 (en) 2015-04-29 2016-04-27 Compressor assembly and turbocharger

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EP3289198B1 true EP3289198B1 (en) 2021-03-31

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US11248483B2 (en) * 2017-06-01 2022-02-15 Nanyang Technological University Turbine housing and method of improving efficiency of a radial/mixed flow turbine

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US3226940A (en) * 1963-12-12 1966-01-04 Worthington Corp Single stage centrifugal compressor refrigeration system
DE1922386A1 (en) 1969-05-02 1970-11-12 Bosch Gmbh Robert Exhaust gas turbocharger
CH610987A5 (en) * 1975-08-29 1979-05-15 Bbc Brown Boveri & Cie
JPS55180930U (en) 1979-06-15 1980-12-26
DE3128040A1 (en) * 1981-07-16 1983-02-03 Bayerische Motoren Werke AG, 8000 München ARRANGEMENT OF AN EXHAUST GAS RECIRCULATION DEVICE FOR AN INTERNAL COMBUSTION ENGINE WITH AN EXHAUST GAS TURBOCHARGER
DE3529543A1 (en) * 1985-08-17 1987-02-26 Daimler Benz Ag CONNECTION LINE BETWEEN A COMPRESSOR AND AN EXHAUST GAS TURBOCHARGER FLANGED ON THE EXHAUST MANIFOLD OF AN INTERNAL COMBUSTION ENGINE AND A SUCTION PIPE
US7056103B2 (en) * 2004-03-05 2006-06-06 Honeywell International, Inc. Method and apparatus for cooling turbomachinery components
US20060130479A1 (en) * 2004-12-21 2006-06-22 Holm Christopher E Turbocharger with blow-by gas injection port
CN104995464B (en) 2012-12-31 2017-06-13 特灵国际有限公司 Gasoline economizer fill assembly and its application method

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US10473114B2 (en) 2019-11-12
WO2016174078A1 (en) 2016-11-03
EP3289198A1 (en) 2018-03-07

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